Molar mass of hydrogen gas (H2)

The molar mass of hydrogen gas (H2) is 2.016 g/mol.

hydrogen

Step-by-step calculation

ElementAtomsAtomic massSubtotal
Hydrogen × 2 1.008 = 2.016
Total2.016 g/mol

Percent composition by element

  • Hydrogen 100%

Hydrogen gas facts

  • Hydrogen gas is a colorless, odorless, and highly flammable gas made of two hydrogen atoms bonded together.
  • It is used to make ammonia, refine petroleum, harden vegetable oils, and power fuel cells.
  • It is the lightest of all gases, about 14 times less dense than air, and it burns with a pale blue flame that is nearly invisible in daylight.

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H2O NaCl CO2 C6H12O6 H2SO4 Ca(OH)2 CuSO4·5H2O C8H10N4O2

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Related compounds

NaOH Sodium hydroxide NH3 Ammonia H2O Water H2SO4 Sulfuric acid HCl Hydrochloric acid NaHCO3 Sodium bicarbonate

FAQ

What is the molar mass of H2?

The molar mass of hydrogen gas (H2) is 2.016 g/mol.

How do you calculate the molar mass of H2?

Multiply the atomic mass of each element by the number of its atoms in H2, then add the results: 2 × 1.008 (H) = 2.016 g/mol.

What percentage of H2 is Hydrogen?

Hydrogen makes up 100% of the mass of hydrogen gas (H2).